I wonder if all anyone has a complete list of the secret phone numbers Larry can dial in LSL6 on his red room phone. I know about the following:

683-4468 - Mark Ceeburp

911 - For Emergencies Only!

976-???? - Sex Line

But if you check all the texts in 610.msg, several more call partners (Sierra staff names) are listed there, and I'm not sure if they're actually unused in the game or just nobody knows the number of them.

I also thought about contacting him, especially with the form if you buy him a coffee via PayPal on his homepage. But I kinda think I'd annoy him about super old details he probably forgot by now himself. Except if they used real numbers which he may still remember xD

On another note, is it possible to somehow read out the numbers from the game scripts? I'm not sure if they can even be decompiled code-wise into what they've been before compilation. Nor do I even understand anything about the internals of the SCI.

Awesome! I extracted the according voice lines now, and also added some extra lines I found while browsing through that huge pile of takes They do sound like they're all from the staff.

I am somehow very sure that the names above map to those voice takes. Since I've never heard most of the staff members (and even less so over phone), can it be it maps to this, mostly done by matching the order of the resources?

Al Lowe: "Sorry, we're unable to come to the phone right now, but if you leave your name and number after the beep, we'll ignore you until it's convenient for us!"

Dan Woolard: "Sorry, we're experiencing difficulty on this line. If you require further assistance, please call Sierra Telephone and ask for Connie. If she is unavailable, Boomer or Ozzy will be glad to take your call."

Victor Sadauskas: "I'm not near the phone right now, but if you leave your name, your phone number, and a brief message, I'll get back in touch with you as soon as I get this code cleaned up!" (very similar to the generic residence call)

The Sadauskas Residence: "We're not near the phone, but leave a message and we'll call you back." (very similar to Victor's specific call)

Oh, I really need a tutorial on it then. When trying to double click a script it only asks for a corresponding *.sc file I don't have, and if I want to see the disassembly instead.
EDIT: Nevermind, I found it under Script > Decompilation

Note that the decompiler is perfect. It may take some effort to get recompilable code. You can check the "Decompilation Archive" thread on the SCI Community for games that have already been successfully decompiled.